Study: Many pet owners interested in feeding their pets with plant-based diet

A surprising number of pet owners, particularly those who are vegan, are interested in feeding their pets a plant-based diet, according to new University of Guelph research.

Researchers with U of G's Ontario Veterinary College along with colleagues in New Zealand conducted an online survey of 3,673 dog and cat owners from around the world to learn about what kinds of foods they fed their pets and themselves.

Published in the journal PLoS One, the survey found that 35 per cent of pet owners whose pets ate conventional diets were interested in switching their animals to a vegan diet.

The research was featured in The National Post and several other publications.

More than half of them (55 per cent) added, though, that they had certain stipulations that had to be met first before they would make the switch. Those stipulations included needing further evidence that a plant-based diet would meet their pets' nutritional needs; wanting approval from their veterinarians; and wanting plant-based pet foods to be easily available.

Just under six per cent of the survey respondents were vegan -- meaning they ate no meat, dairy or fish - and more than a quarter (27 per cent) of them reported they already fed their pets plant-based diets.

Among the rest of the vegans, a full 78 per cent were interested in helping their pets to switch to a plant-based diet if one were available that met their needs.

Lead author Dr. Sarah Dodd, currently a PhD candidate at the OVC's Department of Population Medicine, said even she was surprised by how many vegans had already chosen to eliminate meat from their pets' diets.

"That percentage, 27 per cent, might sound like a small number, but when you think of the actual numbers of pets involved, that's huge, and much higher than we expected."

In total, 1.6 per cent of the 2,940 dogs in the survey and 0.7 per cent of the 1,545 cats were being fed a strictly plant-based diet; only vegans and one vegetarian chose to exclusively feed plant-based diets.

Another 10.4 per cent of the dogs and 3.3 per cent of cats were intermittently fed vegetarian diets or plant-based foods.

Of the 3,673 pet owners surveyed, 6 per cent were vegetarian (meaning they ate no meat but did eat dairy, eggs or honey), 4 per cent were pescatarian (meaning they ate no meat but fish, and may eat dairy, eggs or honey), and nearly 6 per cent were vegan (meaning they ate no animal products).

Dodd performed this study in fulfillment of her MSc degree in Clinical Studies under the supervision of Dr. Adronie Verbrugghe, associate professor of Canine and Feline Clinical Nutrition at the OVC's Department of Clinical Studies

Dodd said while her team's research was not designed to assess whether vegan pet diets are a growing trend, she expects interest in the diets to increase.

"People have been hearing about how vegan diets are linked to lowered risks of cancer and other health benefits in humans. There is also growing concern about the environmental impact of animal agriculture."

Previous studies have also shown that pet owners tend to offer the same kind of diets to their dogs and cats that they adopt for themselves.

"So, while only a small proportion of pet owners are currently feeding plant-based diets to their pets, it is safe to say that interest in the diets is likely to grow."

However, there has not been much research on the nutritional suitability of vegan diets for dogs and cats, nor on the health benefits and risks of plant-based diets in these animals, said Dodd.

"This study shows there is a clear need for further research in this area."

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